Run bash script upon ssh

Question

I have a host on which I created a script .

The script is being executed whenever the user is logging in via ssh bashrc launches the script.

Now I'm trying to get the script to execute even if the user is not actually logging in , and just running a command . For example I want the script to be executed if a user is running the following :

ssh [email protected] some_command

Is there a way to achieve the above?

so what's the problem with the above approach? you can run commands like "ssh user@host '/path/to/script.sh'" if you have everything (permissions) configured correctly. — hovanessyan
– hovanessyan, Commented Sep 25, 2013 at 15:25
I guess that he wants a script being executed on the remote host when the user runs a script via ssh not only when the user logs in. — Atropo
– Atropo, Commented Sep 25, 2013 at 15:45

Atropo · Accepted Answer · 2013-09-25 15:46:59Z

2

A solution affecting all the users could be using pam-exec and launch a script on the user login event. Check the pam-exec manual page and an example on how to use it pam-exec scripting.

A simple solution for a single user should be add the script in the rc file of the ssh user, add your script to:

~/.ssh/rc

I've done some tests and the rc solution works fine in your case, it gets executed when the user launches a remote command via ssh.

If you don't have a rc file just create it.

edited Sep 25, 2013 at 15:46

answered Sep 25, 2013 at 15:18

Atropo

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5 Comments

John Doe Over a year ago

Thanks for the reply! but what if I don't have an rc file under ~/ssh dir ? btw this is a win host running cygwin

Atropo Over a year ago

You're welcome, if you find my answer helpful please upvote and/or accept it. If you don't have the rc file just create it in the ~/.ssh/.

John Doe Over a year ago

when I create it , what should be writen inside ? '!/bin/bash ./script_name' ? or something else?

Atropo Over a year ago

You have 2 possibilities: or the full script or a call to your script.

Atropo Over a year ago

Nice! If you find my answer helpful please upvote and accept it. Thanks!

michael501 · Accepted Answer · 2013-09-25 17:17:44Z

0

you can edit authorized_keys file and add a COMMAND , something like : command="/home/michale/bin/dothis.sh" ...public key... for more details read ssh and authorized_keys documentations.

answered Sep 25, 2013 at 17:17

michael501

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